Indoor air quality testing
Indoor air quality testing looks at what is in your air and why: the filter and how well it fits, return leaks that pull in attic or garage air, duct condition, humidity, and signs of moisture or mold around the coil and drain pan.

Filtration and purification options
| Option | What it does | Best for |
|---|---|---|
| Higher-MERV media filter | Captures fine dust, pollen and smoke particles; MERV 13 traps many fine particles (EPA) | Most homes, allergies, wildfire season |
| Media cabinet | A deeper filter housing that adds filtration without choking airflow | Systems that cannot run a thin high-MERV filter |
| Air purifier | Cleans the air the system circulates | Allergies, odors, stale air |
| Duct sealing and cleaning | Stops attic and garage air from entering; removes built-up debris | Dusty homes, leaky returns |
| Ventilation and humidity control | Brings in fresh air, manages moisture | Tight homes, condensation, stale air |
Allergies, wildfire smoke and dust in Los Angeles
Pollen season, Santa Ana winds, freeway traffic and fire-season smoke all reach indoor air. During smoke events, the California Air Resources Board and local health agencies advise keeping windows closed and running a central system with the best filter it can handle and the fan on (CARB). A blower has to move enough air through a high-MERV filter, so that is worth checking before an upgrade; filtering more should not mean cooling less.

How your ducts affect air quality
A leaky return duct in the attic or garage pulls in dust, insulation fibers and fumes that the system then spreads through the house. Sealing returns and replacing damaged runs can make a real difference; see air duct cleaning and air duct replacement. Attic contamination is covered on attic insulation.
What customers say about Elvira Ocean Air
"This company was amazing from start to finish!!"
"Sam was amazing!... did a great job of actually explaining what was happening and what he was doing..."
"He's also willing to help as long as needed until he gets to the root of the problem."
Indoor air quality questions
What is the best filter for wildfire smoke?
The highest MERV your system can handle, often MERV 13, sized to fit without gaps, once the blower is checked for enough airflow through it.
Will an air purifier help my allergies?
Better whole-house filtration and sealed returns help most allergy sufferers; the right purifier depends on what testing finds.
Why does my house get dusty so fast?
Common causes are leaky return ducts, a poor filter fit or a low-grade filter; fixing those helps more than dusting more often.
